Williamstown · Statistical Area 2 (SA2)
How well-off the area is, how fast its population is growing, and the businesses and new homes here.
A score of 9 for overall advantage puts Williamstown among the most prosperous areas in the country. Residents here have high levels of education and job skills, which contributes to a typical advantage score of 1,101—well above the national average of 1,000.
All statistical area 2 (sa2) areas, 2021. The marker is Williamstown — higher than 86% of areas.
| Williamstown | 9 |
|---|---|
| 3016, VIC | 10 |
SEIFA indexes ranking relative advantage and disadvantage.
This is a highly advantaged area, scoring 9 out of 10 for overall advantage. This is reflected in its strong standing for education and job skills, which is higher than about 90% of similar areas.
9
Higher than 86% of statistical area 2 (sa2) areas.
ABS Index of Relative Socio-economic Advantage and Disadvantage, 2021, as a national decile: 1 = among the 10% most disadvantaged areas in Australia, 10 = among the 10% most advantaged. IRSAD summarises both advantage and disadvantage, so a high score reflects relatively many high-income, well-educated households and few low-income, low-skill ones.
9
Higher than 86% of statistical area 2 (sa2) areas.
ABS Index of Relative Socio-economic Disadvantage, 2021, as a national decile: 1 = among the 10% most disadvantaged areas in Australia, 10 = among the least disadvantaged. IRSD focuses on disadvantage alone (low income, low education, unemployment, unskilled occupations), so a higher decile means relatively less disadvantage.
8
Higher than 71% of statistical area 2 (sa2) areas.
ABS Index of Economic Resources, 2021, as a national decile: 1 = among the 10% lowest areas for economic resources in Australia, 10 = among the highest. IER reflects the income, housing costs, dwelling size and assets of households, so a higher decile means relatively greater economic resources.
9
Higher than 86% of statistical area 2 (sa2) areas.
ABS Index of Education and Occupation, 2021, as a national decile: 1 = among the 10% lowest areas for education and occupation in Australia, 10 = among the highest. IEO reflects residents' qualifications and the skill level of their jobs, so a higher decile means a more highly educated and skilled workforce.
1,101
Higher than 87% of statistical area 2 (sa2) areas.
ABS Index of Relative Socio-economic Advantage and Disadvantage, 2021, as a raw index score (standardised so the Australian average is about 1000). Higher scores indicate relatively greater advantage; lower scores greater disadvantage.
Annual population estimates and change since the census.
The population has grown by 6.4% since 2021. While this increase is higher than most areas, it is a little below the Victorian growth rate of 8.0%.
17,102
Higher than 78% of statistical area 2 (sa2) areas.
Estimated resident population (ABS), 2025.
6.4%
Higher than 64% of statistical area 2 (sa2) areas.
Population growth since the 2021 Census, from ABS annual estimates.
Operating businesses and dwellings approved.
With 2,239 businesses, Williamstown is among the largest areas at this level for business and building activity.
2,239
Higher than 86% of statistical area 2 (sa2) areas.
Operating businesses (ABS Counts of Australian Businesses), June 2025.
Australian Bureau of Statistics. (2021). Economy & Advantage in Williamstown [Census of Population and Housing]. CensusAtlas, used under CC BY 4.0. https://censusatlas.au/region/sa2/213021346/williamstown/topic/economy-advantage
